Lin Yan and Cheng Yi traveled together all over the world at the beginning of the chaos. Later, in a catastrophe, in order to save Lin Yan, Cheng Yi went through untold hardships in exchange for a spirit stone, and together with all his own spirit, he refined it in the Fuxi furnace and protected Lin Yan in the barren mountain. However, he fell into reincarnation. Thousands of years later, because of the appearance of a baby, Lin Yan left the barren mountain to search for memories, unravel mysteries one by one, rescue Cheng Yi, and jointly build a new millennium order.